Zarinah Agnew on mirror neurons

Mirror neurons are thought to be the key to human mimicry, allowing us to ape the actions of others and maybe even forming the basis for empathy. Zarinah Agnew is a neuroscientist at the UCL Institute of Cognitive Neuroscience, whose research uses functional MRI to investigate how these systems work. She talks to the Wellcome Trust's Daniel Glaser about these mysterious components of the brain.